oauth2-redirect.html with query parameters return 404

Hi, when I try to login oauth2 feature, it is redirection to this URL:
```
http://localhost:3000/swagger/oauth2-redirect.html?state=U3X..
```

But when I checked, if any query parameters go to this html oauth2-redirect.html route not found and return 404.

This should be bug and need to fix the route, serve steps.

v1.3.5 works fine with oauth2 redirection.
